ISL62391 Datasheet, PDF (3/20 Pages) Intersil Corporation – High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers

ISL62391, ISL62392
Electrical Specifications
Circuit of Figure 1 and Figure 2, LDO3, OUT1, OUT2, and REF, VIN = 12V, EN = VCC, T_A = -40°C to +100°C,
unless otherwise noted. Typical values are at T_A = +25°C. Parameters with MIN and/or MAX limits are 100%
tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not
production tested. (Continued)
PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
FB Input Bias Current
FB = 0.6V
-12
30
nA
FB = 0.6V (ISL62391(2)HRTZ, T_A = -10°C to
-10
+100°C)
30
nA
Frequency Range
200
600
kHz
Frequency Set Accuracy
VOUT Voltage Adjust Range
F_SW = 300kHz (Note 4)
VIN ≥ 6V for VOUT = 5.5V
-12
12
%
0.6
5.5
V
VOUT Soft-discharge Resistance
14
50
Ω
PGOOD Pull-down Impedance
(Note 3)
32
50
Ω
PGOOD Leakage Current
PGOOD = VCC
0
1
µA
Maximum PGOOD Sink Current
(Note 3)
5
mA
PGOOD Soft-start Delay
(From first EN = 1 to PGOOD = 1)
EN1 = EN2 = 1
2.20 2.75 3.70
ms
EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1 4.50 5.60 7.60
ms
UGATE Pull-up ON-resistance
EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1 4.50 5.60 7.50
ms
(ISL62391(2)HRTZ, T_A = -10°C to +100°C)
200mA source current (Note 3)
1.0
1.5
Ω
UGATE Source Current
UGATE-PHASE = 2.5V (Note 3)
2.0
A
UGATE Pull-down ON-resistance
250mA source current (Note 3)
1.0
1.5
Ω
UGATE Sink Current
UGATE-PHASE = 2.5V (Note 3)
2.0
A
LGATE Pull-up ON-resistance
250mA source current (Note 3)
1.0
1.5
Ω
LGATE Source Current
LGATE-PGND = 2.5V (Note 3)
2.0
A
LGATE Pull-down ON-resistance
250mA source current (Note 3)
0.5
0.9
Ω
LGATE Sink Current
LGATE-PGND = 2.5V (Note 3)
4.0
A
UGATE to LGATE Deadtime
UG falling to LG rising, no load
21
ns
LGATE to UGATE Deadtime
LG falling to UG rising, no load
21
ns
Bootstrap Diode Forward Voltage
2mA forward diode current
0.58
V
Bootstrap Diode Reverse Leakage Current
FCCM Input Voltage
V_R = 25V
Low Level (DCM enabled)
0.2
1
µA
0.8
V
Float Level (audio filter enabled)
1.9
2.1
V
High Level (forced CCM)
2.4
V
FCCM Input Leakage Current
FCCM = GND or VCC
-2
2
µA
Audio Filter Switching Frequency
FCCM floating
28
kHz
EN Input Voltage
Low Level (Clear fault level/SMPS off)
0.8
V
Float Level (Delayed start)
1.9
2.1
V
High Level (SMPS on)
2.4
V
EN Input Leakage Current
EN = GND or VCC
-3.5
3.5
µA
ISEN Input Impedance
EN = VCC
600
kΩ
ISEN Input Leakage Current
EN = GND
0.1
µA
OCSET Input Impedance
EN = VCC
600
kΩ
OCSET Input Leakage Current
EN = GND
0.1
µA
OCSET Current Source
EN = VCC
8.7
10.0 10.5
µA
EN = VCC (ISL62391(2)HRTZ, T_A = -10°C to
+100°C)
9
10.0 10.5
µA
3
FN6666.4
December 22, 2008